rem to save database user in file
exp system/123 file=TestUsers.DMP ROWS=n RECORD=n FULL=n OWNER=ALLTYPES MANYTOMANY MANYTOMANY2 OBJ1TEST ONETON ONETONVER2 ONETOONE PORTAL PORTAL2 TWOPRIMARYKEY FRIENDS OBJ2TEST BIGCOMPANYPORTAL OBJM2NTEST OBJPRIMITIVES ONETABLE OBJWRAPERS GAMEANDMOVIES